Elevator



Se t. 18 E923. 1,4685%) w. w. WILSON ELEVATOR Filed Sept. 1922 fiw 69127672. M17122? 140mm.

PATENT @FIF'MCE.

WILLIAM WEBSTER WILSON, DE LOS ANGELES, CALIFORNIA.

ELEVATOR.

Application filed September 7, 1922.

To all whom it may concern-.-

Be it known that I, \VILLIAM Wnes'rnn VVILsoN, a citizen of the United States, residing in Los -Angeles, county of Los Angeles, State of California, have invented new and useful Improvements in Elevators, of which the following is a specification.

This invention relates to well elevators for pipe, casing and the like, the improvement of this invention relatin more particularly to that type of elevator 1n which the two bails are attached to the two oppositehinged halves of the elevator. In elevators of this type the lugs, trunnions' or the like by which the bails are attached to the elevator halves, of course move with those halves when they are swung open; and in such movement the bails are more or less moved along with the two halves in their movement. This movement of the .bails has usually necessitated either closed. even though the hook be more or less tightly en aged with the bails.

With t ese preliminary statements in mind the invention will be best understood from the following detailed description of a preferred specific form of my invention, which description I 've by way of illustration of the invention andnot as necessarily limitative thereof. For this purpose I refer to the accompanying drawings in which Fig. 1 is a perspective of an elevator e nipped with my invention; Fig. 2 is a plan of the same; Figs. 1 and 2 showing the elevator in closed position; Fig. 3 is a similar plan showing the elevator in its open position; and Fig. 4 is a fragmentary side elevation showing the bail engaging lugs.

In the drawings, illustrating the present specific construction which my invention takes, I have shown an elevator composed of two halves 10 and 11 hinged together at the hinge pin 12 and adapted to be closed around a pipe. The two halves are held in their closed position by a latch mechanism 13 that will be easily understood from the drawmgs Serial No. 586,639.

without the necessity of detailed explanation. This latch mechanism is of the type that forms the subject matter of the application of Elihu C. Wilson Ser. No. 375,332, filed Apr. 20, 1920 entitled \Vell elevators. Each half is provided with a handle 14 for convenience in closing and opening the halves.

At each 'side of the elevator, one on each half 10 and 11, there is a suspension lug 15 under which the loop bails 16 engage. The openings 17 between the suspension lugs 15 and lower guide lugs 18, through which the bails pass, are cut back into the body of the elevator halves, as is clearly shown in Figs. 1 and 4; and as is indicated in dotted lines in Fig. 2; so that the bails, whose lower ends are somewhat curved inwardly, may reach in toward the inner bore of the elevator and thus be in a position more directly under the load that is imposed by the pipe collar resting upon the upper ends of the two halves 10 and 11. To this particular feature, in itself, I make no claim, it being included in the subject matter of the application of Charles E. Wilcox entitled Elevator, filed Jan. 29, 1921, Ser. No. 440,933. Also the slot at the outer ends of lugs 15 and 18, as shown at 20, is placed in a diagonal direction so that the bails 16 will not become accident-ally disengaged from the elevator body while they are in their upright position; it being necessary to turn the bails around to a diagonal position in order to remove them. This particular feature is also of the subject matter of the said Wilcox application, and to it, in itself, I herein make no claim. While these features of bail and lug arrangement are not to be construed as limitations on the invention, the invention being applicable to any type of bail connection, yet the invention is particularly useful Where the balls be close to the elevator body and must move therewith.

The lugs 15, instead of projecting straight out from the elevator halves 10 and 11, project generally in non-radial directions and preferably are curved in the manner shown in the drawings; and this curvature allows the elevator halves to be opened up without the lugs binding on the bails, as will be clearly apparent from an inspection of Figs. 2 and 3. Consequently, when the elevator is opened, there is no tendency to twist the bails; they are merely moved outwardly from the positions shown in Fig. 2 to the i halves, whlle tion, either when positions shown in Fig. 3. This movement of the bails of course takes place easily as there is nothing that prevents a direct movement of divergence of the bails at their lower ends. However, when a hook is hooked through the upper ends 16 of the bails, it is apparent how the hook prevents the two hails from being twisted (rotated about a vertical axis) andit is apparent how, if the bails were afiixed to the halves 10 and 11 in such a manner as to move directly with those halves, the engagement of the hook with the upper. end of the bails would prevent the elevator halves being opened. But by my invention this difliculty is obviated as the bails are only moved to diverge their lower ends and as the opening of the elevator halves does not in any way tend to twist the bails about a vertical. axis.

The" structure thus provides that the elevator halves can be opened freely while the bails are held in their upri ht position; and it also provides that the balls cannot become accidentally disengaged from the elevator the bails are in upright posithe elevator is closed or when it is open.

Having described a preferred form of my invention, I claim:

1. An elevator of the type having two parts hinged together and adapted to surround a pipe and having a bail engaging lug on each part, and bails engaging said lugs; characterized by the lugs extending outwardl from the elevator parts in general directlons along lines that intersect at a point at that side of the center of the pipe receiving bore at which the hinge is located.

2. An elevator of the type having two parts hinged together and adapted to surround a pipe and having a bail engaging lug on each part, and bails engaging said lugs; characterized by the lugs extending outtoward the side of the elevator parts that are hinged together.

4. An elevator of the type having two parts hinged together and adapted to surround a pipe and having a bail engaging lug on each part, and bails engaging said lugs: characterized by the lugs extending outwardly from the elevator parts in general direct-ions along lines that intersect at a point at that side of the center of the pipe receiving bore at" which the hinge is located, and another lug under each bail engaging lug, and the opening between the two lu being arranged diagonally so that the ball cannot be disengaged when in a vertical position.

5. An elevator of the type having two parts hinged together and adapted to surround a pipe and having a bail engagin lug on each part, and bails engaging said ugs;;

characterized by the lugs extending out wardly in curved conformation from the elevator parts, and a curvature beingcom vexed toward the side of the elevator parts that are hinged together, and another lug under each bail engaging lug, the opening between the two lugs being arran ed diagonally so that the bail cannot be disengaged when in a vertical osition.

lln witness that claim the foregoing I have hereunto subscribed my name this 25th day of August, 1922.

WILLIAM ESTER LSON. 

